Brake for motor-driven cycles and other vehicles.



APPLIOATION FILED SEPT. 25, 1908.

Patented Mar. 29, 1910.

HENRI DUFAUX AND diRliUaElD DUL EAUX, @F QENIZVEE, SVVIL 'JZERLANED.

BRAKE FQIR, MQTOR-DRIVEN CYCLES MID UTE-TEE; VEHECLES.

Specification of Letters Patent.

Application filed September 25, 1908. Serial No. 454,734.

To all whom it may concern:

lie it known that we, HENRI DUFAUX and ARMANI) DUFAUX, citizens of Switzerland, residing at Geneva, Switzerland, have invented certain new anduscful Improvements in Brakes for Motor-Driven Cycles and other Vehicles; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it gippertains to make and use the same, ref- "thereon, which fication.

'prence being hadto the accompanying drawand to letters of reference marked form a part of this speci- The objects of the invention are to construct a brake for motor driven vehicles that comprises a brake band mounted on the axle orwheel of a vehicle, and a support mounted on the frame, combined with brake shoes that are adapted to he forced apart to engage the brake band to cause a braking act-ion. The brake shoes are mount-ed to rest on the support and to be concentrically supported thereon and held snugly thereto, and when in this normal position being but a slight distance from the brake band so that when the operating mechanism is actuated, the brake shoes have a very slight distance to move before they engage the brake band.

The invention is illustrated in the accompanying drawing, in which- Figurel is a front view of the device, and Fig. 2 is a front View of the brake shoes. Fig. 3 is a section through r 1 in Fig. l.

The brake shoes at are formed in the shape of segments and are normally slightly separated, being pivoted. at one end by a flat spring Z), one of the segments having, from its end opposite the spring 6, a link 0, which link is operated to force the shoes apart by an arm 9 which is mounted on the stud g. The inward movement of the brake shoes a,

toward each other, is caused by the springs (Z V flange, segment-shaped brake shoes, sprlngs connecting the segments to force them to which are shown in Fig. 1, and this move ment, inward, is limited by the flange m of the support m, which support is formed preferably in the shape of a spider and has the peripheral flange m. This support m is secured to the frame in any suitable Way, the brake shoes being held in sliding engagementwith the support by' the screws 7: which Work in the slots (1 in the brake shoes, as shown in l i 1.

The brake band 2' is preferably made with an inwardly turned flange portion which is fastened by screws or other means to a ring 2", this ring in thebrake band being adapted to clamp the spokes of the notOr-cycle wheel, or similar vehicle wheel, in the usual manner. The circumference of the brake hand is such that when the brake shoes are drawn in to the support, there is very little space between the brake shoes'and the brake band so that but a slight motion of the brake shoesis necessary to cause them to engage the brake band. The separation or forcing apart of the bralre shoes a, by the rocking actionof the link 0 and the arm g, is caused by a segment-shaped piece or lever f which in turn is actuated by a suitable connection 6, preferably flexible, the lever 7 being normally returned to its position when the operating means 6 is actuated by reason of the spring 72.. y

it will be understood that other kinds of Patented Mar. 2%), 191th springs, except the helical springs 03 shown 1n the drawing, can be used.

Having thus described our invention, what we claim is 1. A. brake comprising a support having a circular flange, a pair of segment-shaped brake shoes, springs to force the brake shoes in engagement with the flange, a link on one end of one of the brake shoes, a stud passing through the other abutting end of the ad acent brake shoe, an arm on the stud, manually operated means for turning the stud to force the brake shoes from the flange of the support, and a brake band surrounding the brake shoes and adapted to be engaged by them when they leave the support.

2. In a brake, a support having a circular ward each other in engagement with the fialwe a brake band surroundin the shoes a link on the en& of one segment a stml we have hereunto set eur hands this twelfth passing through the abuttin end of the day of September 1908.

other se ent the link and he arm bein pivotall g connected, the stunt passing through the sup 0131;, & lever on the support, and manual y operated means for aetu- Witnesses:

ating the lever. B, SOLIBERGER In testimony, that we claim the foregoing, L. H. MUNIER. 

